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There is a whole range of options for designing and configuring particularly quiet and durable fans. The AxiTop diffuser from ebm-papst provides a significant improvement in noise and efficiency and sets new benchmarks.

The diffuser works like a reversed nozzle and, through its pressure-boosting effectiveness, reduces discharge losses substantially. Efficiency increases, while operating noise is reduced at the same time. Energy savings of up to 27 % and a simultaneous reduction of operating noise by 7.2 dB(A) are attainable. With the same power consumption, with the AxiTop-equipped fan, up to a 9% higher flow rate can be generated, at which there is approx. 4.9 dB(A) lower noise emission. The user saves energy and costs during operation; the design engineer can configure a refrigeration system with less heat exchanger surface area. The acoustic improvement is particularly of interest if fans are working in noise-sensitive environments.

The diffuser was already presented in 2012, was then further optimised and now, for the first time, is being used in fans of size 800 and 910 in series, further sizes are planned. It is merely 250 mm tall, consists of lightweight, durable plastic material and can easily be installed and retrofitted. An application design change is usually not required, even when retrofitting.

The ebm-papst Group is the world's leading manufacturer of fans and motors. Since it was founded the technology company has continuously set global market standards. These developments range from electronically controlled EC fans (recently launched onto the market), to aerodynamic improvements to fan blades, to resource-conserving selection of materials, including biomaterials.

In the fiscal year 2013/14, the company achieved a turnover of just over €1.5 billion Euro. ebm-papst employs around 11,500 people at 18 production sites (including in Germany, China and the USA) and in 57 sales offices worldwide. Fans and motors from the global market leader are used in many branches of industry, including ventilation, air conditioning and refrigeration technology, household appliances, heating systems, IT and telecommunications, as well as automotive and commercial vehicle applications.